Comtech EF Data Vipersat CDD-564L Especificaciones descargar pdf (Pagina 49)

CDD-562L/564 Demodulator with IP Module Revision 2

Rear Panel Connections MN/CDD564L.IOM

3–3

3.2.1 Rx IF Connections

3.2.1.1 CDD-562L and CDD-564L L-

Band Chassis Rx Input

There may be DC voltages present on the Type ‘N’ Rx IF connectors, up to a

maximum of 48 volts.

The Rx IF input port connectors on the L-Band demodulators are

50Ω ‘N’ female types. Two connectors, labeled Rx1 and Rx2,

are provided on the CDD-562L (shown at left), while four

connectors labeled Rx A through Rx D are available on the

CDD-564L (shown to the right).

The return loss on these ports is typically better than 17 dB, and if the user wishes to connect to a

75Ω system, an inexpensive ‘N’ to ‘F’ type adapter can be used and is available as an optional

accessory. While there will be a reduction in return loss when doing this, the effect in most

systems will be imperceptible.

3.2.1.2 CDD-564 70/140 MHz Chassis Rx Input

The Rx IF Input port connectors are BNC female types, with a programmable

impedance of 50Ω or 75Ω. Four connectors, labeled Rx 1 through Rx 4, are provided

on the CDD-564.

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Comtech EF Data Vipersat CDD-564L Especificaciones Pagina 49